/*
 * Copyright 2010, The Android Open Source Project
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "PlatformTouchEvent.h"
#include <wtf/CurrentTime.h>
#include <view/view.h>
#if ENABLE(TOUCH_EVENTS)

namespace WebCore {

// These values should be kept in sync with those defined in the android.view.KeyEvent class from the Android SDK.
enum AndroidMetaKeyState {
    META_SHIFT_ON = 0x01,
    META_ALT_ON = 0x02,
    META_SYM_ON = 0x04
};

PlatformTouchEvent::PlatformTouchEvent(const cdroid::MotionEvent&event){
    const size_t pointerCount=event.getPointerCount();
    WebCore::PlatformTouchPoint::State defaultTouchState;
    Vector<WebCore::IntPoint> points(pointerCount);
    Vector<int>ids(pointerCount);
    Vector<WebCore::PlatformTouchPoint::State> touchStates(pointerCount);
    const int action=event.getActionMasked();
    const int actionIndex=event.getActionIndex();
    const int metaState=event.getMetaState();
    switch (action) {
    case cdroid::MotionEvent::ACTION_DOWN:
        m_type = WebCore::PlatformEvent::TouchStart;
        defaultTouchState = WebCore::PlatformTouchPoint::TouchPressed;
        break;
    case cdroid::MotionEvent::ACTION_UP:
        m_type = WebCore::PlatformEvent::TouchEnd;
        defaultTouchState = WebCore::PlatformTouchPoint::TouchReleased;
        break;
    case cdroid::MotionEvent::ACTION_MOVE:
        m_type = WebCore::PlatformEvent::TouchMove;
        defaultTouchState = WebCore::PlatformTouchPoint::TouchMoved;
        break;
    case cdroid::MotionEvent::ACTION_CANCEL:
        m_type = WebCore::PlatformEvent::TouchCancel;
        defaultTouchState = WebCore::PlatformTouchPoint::TouchCancelled;
        break;
    case cdroid::MotionEvent::ACTION_POINTER_DOWN:
        m_type = WebCore::PlatformEvent::TouchStart;
        defaultTouchState = WebCore::PlatformTouchPoint::TouchStationary;
        break;
    case cdroid::MotionEvent::ACTION_POINTER_UP:
        m_type = WebCore::PlatformEvent::TouchEnd;
        defaultTouchState = WebCore::PlatformTouchPoint::TouchStationary;
        break;
    default:break;
        // We do not
    }
    for (int c = 0; c < (int)points.size(); c++) {
        cdroid::PointerCoords pt;
	event.getPointerCoords(c,pt);
        points[c].setX(pt.getX());
        points[c].setY(pt.getY());
        // Setting the touch state for each point.
        // Note: actionIndex will be 0 for all actions that are not ACTION_POINTER_DOWN/UP.
        if ( (action==cdroid::MotionEvent::ACTION_DOWN) && (c == actionIndex) ) {
            touchStates[c] = WebCore::PlatformTouchPoint::TouchPressed;
        } else if ( (action==cdroid::MotionEvent::ACTION_UP) && (c == actionIndex) ) {
            touchStates[c] = WebCore::PlatformTouchPoint::TouchReleased;
        } else {
            touchStates[c] = defaultTouchState;
        }
    }
    m_touchPoints.reserveCapacity(points.size());
    for (unsigned c = 0; c < points.size(); c++)
        m_touchPoints.append(PlatformTouchPoint(ids[c], points[c], touchStates[c]));
    m_altKey  = metaState & cdroid::KeyEvent::META_ALT_ON;
    m_shiftKey= metaState & cdroid::KeyEvent::META_SHIFT_ON;
    m_ctrlKey = metaState & cdroid::KeyEvent::META_SYM_ON;
    m_timestamp=WTF::currentTime();
    m_timestamp=event.getEventTime();

}

}//endof namespace WebCore
#endif
